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drm/print: Add generic drm dev printk function

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We already have some drm printk functions that need to duplicate
a code to get a similar format of the final result, for example:

  [ ] 0000:00:00.0: [drm:foo] bar
  [ ] 0000:00:00.0: [drm] foo bar
  [ ] 0000:00:00.0: [drm] *ERROR* foo

Add a generic __drm_dev_vprintk() function that can format the
final message like all other existing function do and allows us
to keep the formatting code in one place.

Cc: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240517163406.2348-2-michal.wajdeczko@intel.com
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
This commit is contained in:
Michal Wajdeczko 2024-05-17 18:34:04 +02:00 committed by Rodrigo Vivi
parent 0d5edcc60a
commit 178c0a33c4
No known key found for this signature in database
GPG Key ID: FA625F640EEB13CA
1 changed files with 30 additions and 22 deletions
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52
drivers/gpu/drm/drm_print.c
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@ -176,6 +176,32 @@ void __drm_printfn_seq_file(struct drm_printer *p, struct va_format *vaf)
} }
EXPORT_SYMBOL(__drm_printfn_seq_file); EXPORT_SYMBOL(__drm_printfn_seq_file);
static void __drm_dev_vprintk(const struct device *dev, const char *level,
const void *origin, const char *prefix,
struct va_format *vaf)
{
const char *prefix_pad = prefix ? " " : "";
if (!prefix)
prefix = "";
if (dev) {
if (origin)
dev_printk(level, dev, "[" DRM_NAME ":%ps]%s%s %pV",
origin, prefix_pad, prefix, vaf);
else
dev_printk(level, dev, "[" DRM_NAME "]%s%s %pV",
prefix_pad, prefix, vaf);
} else {
if (origin)
printk("%s" "[" DRM_NAME ":%ps]%s%s %pV",
level, origin, prefix_pad, prefix, vaf);
else
printk("%s" "[" DRM_NAME "]%s%s %pV",
level, prefix_pad, prefix, vaf);
}
}
void __drm_printfn_info(struct drm_printer *p, struct va_format *vaf) void __drm_printfn_info(struct drm_printer *p, struct va_format *vaf)
{ {
dev_info(p->arg, "[" DRM_NAME "] %pV", vaf); dev_info(p->arg, "[" DRM_NAME "] %pV", vaf);
@ -187,19 +213,12 @@ void __drm_printfn_dbg(struct drm_printer *p, struct va_format *vaf)
const struct drm_device *drm = p->arg; const struct drm_device *drm = p->arg;
const struct device *dev = drm ? drm->dev : NULL; const struct device *dev = drm ? drm->dev : NULL;
enum drm_debug_category category = p->category; enum drm_debug_category category = p->category;
const char *prefix = p->prefix ?: "";
const char *prefix_pad = p->prefix ? " " : "";
if (!__drm_debug_enabled(category)) if (!__drm_debug_enabled(category))
return; return;
/* Note: __builtin_return_address(0) is useless here. */ /* Note: __builtin_return_address(0) is useless here. */
if (dev) __drm_dev_vprintk(dev, KERN_DEBUG, NULL, p->prefix, vaf);
dev_printk(KERN_DEBUG, dev, "[" DRM_NAME "]%s%s %pV",
prefix_pad, prefix, vaf);
else
printk(KERN_DEBUG "[" DRM_NAME "]%s%s %pV",
prefix_pad, prefix, vaf);
} }
EXPORT_SYMBOL(__drm_printfn_dbg); EXPORT_SYMBOL(__drm_printfn_dbg);
@ -287,12 +306,7 @@ void drm_dev_printk(const struct device *dev, const char *level,
vaf.fmt = format; vaf.fmt = format;
vaf.va = &args; vaf.va = &args;
if (dev) __drm_dev_vprintk(dev, level, __builtin_return_address(0), NULL, &vaf);
dev_printk(level, dev, "[" DRM_NAME ":%ps] %pV",
__builtin_return_address(0), &vaf);
else
printk("%s" "[" DRM_NAME ":%ps] %pV",
level, __builtin_return_address(0), &vaf);
va_end(args); va_end(args);
} }
@ -312,12 +326,7 @@ void __drm_dev_dbg(struct _ddebug *desc, const struct device *dev,
vaf.fmt = format; vaf.fmt = format;
vaf.va = &args; vaf.va = &args;
if (dev) __drm_dev_vprintk(dev, KERN_DEBUG, __builtin_return_address(0), NULL, &vaf);
dev_printk(KERN_DEBUG, dev, "[" DRM_NAME ":%ps] %pV",
__builtin_return_address(0), &vaf);
else
printk(KERN_DEBUG "[" DRM_NAME ":%ps] %pV",
__builtin_return_address(0), &vaf);
va_end(args); va_end(args);
} }
@ -332,8 +341,7 @@ void __drm_err(const char *format, ...)
vaf.fmt = format; vaf.fmt = format;
vaf.va = &args; vaf.va = &args;
printk(KERN_ERR "[" DRM_NAME ":%ps] *ERROR* %pV", __drm_dev_vprintk(NULL, KERN_ERR, __builtin_return_address(0), "*ERROR*", &vaf);
__builtin_return_address(0), &vaf);
va_end(args); va_end(args);
} }